New payroll tax credits and COBRA provisions will mean changes to how you handle payroll taxes and quarterly tax filings. The IRS asks that employers calculate federal withholding and advance earned income credit payments with new tables just issued as soon as possible, but no later than April 1st, 2009.
Don't worry if you missed the April 1st deadline. Intuit can help you catch up on stimulus tax rate changes today and get stimulus dollars into employee paychecks.